Strange or natural behaviour of our fish?!

[Maya_nl]

Strange or natural behaviour of our fish?!
We know that some fish stand confessed as coral-eating fish.
A few of them are dwarf-angels,large-angels, butterflies, file fish, triggers...
But also tangs may nibble to lower animals.

Some species are:
Z. veliferum & Z. desjardinnii which pick on gorgonia's and feather dusters
A. tentennii & A. leusternon as far as I know (and heard) pick only on gorgonia's.(probably for a few months)

As far as I know, they do this only at the time they change from juveniles to adults.
Maybe they do this because they get something offered too short to food what has them necessary.
This problem is remedy if you feed them every week a bit mussel.

I want to do some more research of fishes with this strange behaviour and I need your help.
Who know's more species with a strange behaviour?!
Please share your experience with us...

greetings
Maya

 

[reiple]

Do you consider nibbling near the mouths of brain corals part of this behaviour? Hippo Tangs do this often in my tank.

 

[wrassehole]

ive never seen mine eat corals, but they do rippem apart when i place them in their territory sometimes. they seen to compete with the corals for space. I wonder why? maybe because there in a small box?